ASTROSAT CZTI

Data Quality Report

Orbit 31255

Creation date: 2024-06-27T20:25:41.842201
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A10_073T02_9000004522_31255cztM0_level2.evt modeM0/AS1A10_073T02_9000004522_31255cztM0_level2_quad_clean.evt
Size (bytes)603,414,720106,611,840
Size575.5 MB 101.7 MB
Events in quadrant A3,517,510703,652
Events in quadrant B5,711,840693,907
Events in quadrant C3,865,212669,182
Events in quadrant D4,690,346658,470

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149401
B0221651
C0158981
D0186281

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7228500.691754%
B72281512.089098%
C72271421.964854%
D72281702.351965%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7778 7229 0 0 0.00% 0.00%
B 7778 7229 14 14 0.18% 0.19%
C 7777 7228 11 11 0.14% 0.15%
D 7778 7229 85 85 1.09% 1.18%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 11 47 14220 73.54 906 889 181.3
A 13 254 13917 71.87 906 889 181.3
A 3 137 8999 44.74 906 889 181.3
B 6 159 1987841 11623.02 888 867 171.0
B 0 190 156983 913.22 888 867 171.0
B 12 111 20624 115.57 888 867 171.0
C 3 233 182941 912.32 853 855 199.6
C 14 238 141885 706.61 853 855 199.6
C 0 10 70771 350.3 853 855 199.6
D 8 195 747962 3277.84 860 844 227.9
D 12 218 333403 1459.04 860 844 227.9
D 2 250 155315 677.71 860 844 227.9

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter